February 7 » Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith.
April 5 » Archaeologists in Knossos, Crete, discover a large cache of clay tablets with hieroglyphic writing in a script they call Linear B.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
July 19 » The first line of the Paris Métro opens for operation.
September 17 » Philippine–American War: Filipinos under Juan Cailles defeat Americans under Colonel Benjamin F. Cheatham Jr. at Mabitac.
November 7 » Second Boer War: Battle of Leliefontein, a battle during which the Royal Canadian Dragoons win three Victoria Crosses.
Day of death May 20, 1967
The temperature on May 20, 1967 was between 10.2 °C and 16.1 °C and averaged 12.6 °C. There was 9.3 hours of sunshine (58%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 14 » Counterculture of the 1960s: The Human Be-In takes place in San Francisco, California's Golden Gate Park, launching the Summer of Love.
January 23 » Milton Keynes (England) is founded as a new town by Order in Council, with a planning brief to become a city of 250,000 people. Its initial designated area enclosed three existing towns and twenty one villages. The area to be developed was largely farmland, with evidence of continuous settlement dating back to the Bronze Age.
March 26 » Ten thousand people gather for one of many Central Park be-ins in New York City.
July 24 » During an official state visit to Canada, French President Charles de Gaulle declares to a crowd of over 100,000 in Montreal: Vive le Québec libre! ("Long live free Quebec!"); the statement angered the Canadian government and many Anglophone Canadians.
October 9 » A day after his capture, Ernesto "Che" Guevara is executed for attempting to incite a revolution in Bolivia.
December 6 » Adrian Kantrowitz performs the first human heart transplant in the United States.
When copying data from this family tree, please include a reference to the origin: Robert Postt, "Family tree Postt", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-postt/I67.php : accessed March 2, 2026), "Pieter Johannes Cornelis Postt (1900-1967)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.